SummaryTLDR = BU fork will only be added to exchnages with proper replay protection and it will be an altcoin called BTU / XBT
https://www.scribd.com/document/342194766/Hardfork-Statement-3-17-11-00amhttps://fs.bitcoinmagazine.com/assets/exchange_handling_of_contentious_hard_fork_event.pdf20 Exchanges in the document that say the original chain with remain bitcoin / btc regardless of outcome :
Bitfinex, Bitstamp, BTCC, Bitso, Bitsquare, Bitonic, Bitbank, Coinfloor, Coincheck, itBit, QuadrigaCX, Bitt, Bittrex, Kraken, Ripio, ShapeShift, The Rock Trading and Zaif
2 signers agree with document but place an exception that they reserve the right to rename BTU as BTC if the supermajpority switches :
ShapeShift - If BTU sees 95% it wins the name BTC, otherwise the original chain remains BTC -
https://twitter.com/ErikVoorhees/status/842830189474136064Kraken - At their discretion -
https://www.reddit.com/r/Bitcoin/comments/5zz6cu/important_the_exchange_announcement_is_indicating/df2fnyz/----------------------------------
2 more exchange joined this list :
21)
Bitmex https://twitter.com/BitMEXdotcom/status/842796617120059393https://blog.bitmex.com/a-statement-on-the-possible-bitcoin-unlimited-hard-fork/22)
poloniex https://poloniex.com/press-releases/2017.03.17-Hard-Fork/https://twitter.com/Poloniex/status/842789390518812673 poloniex is actually saying that if you have bitcoin in your wallet, you can withdrawn those as they are bbitcoin unlimited, this does not sound like an altcoin to me but more like having the same coins twice
this is dangerous it can certainly kill the value on both chain, since people will get coins for free